Precision Mechanical Rotary Table
■ Outstanding positioning capability The MDRS150 low-profile, high-precision direct drive rotary table, with its high-performance coreless torque motor and precision-tuned angular-contact sliding-friction bearing system, provides the system with control resolution up to 0.02 arc sec. The extremely low, nearly linear sliding-friction resistance guarantees micro-step incremental motion, delivering outstanding positioning capability (steady-state error) better than ±0.08 arc sec and fast settling time (steady-state time) better than 25 ms. ■ Direct-coupled coreless torque motor The MDRS150 uses a segmented coreless torque motor that reduces periodic torque ripple. This precision direct drive rotary table provides ultra-smooth velocity stability comparable to high-quality brushed DC motors, without the inherent maintenance requirements of all DC motors; its low-speed performance is excellent, with position following error remaining better than ±0.5 arc sec even at extremely low speeds below 0.01°/s (36 arc sec/s). ■ Brushless drive The MDRS150 precision mechanical rotary table uses brushless direct drive motor technology to maximize positioning performance and dynamic response. No brush replacement is required, and there is no need to maintain gear trains or belts. Compared with gear- or belt-driven mechanisms, direct drive also provides faster acceleration and higher response speed. ■ Compact structure The MDRS150 precision mechanical rotary table is specially optimized for the sliding-friction bearing system and feedback system, minimizing table height and lowering the system's effective working height, effectively reducing the Abbe errors caused by axial error and shaft runout. In addition to the low overall height, the MDRS series also features a standard clear aperture for beam transmission.
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